diff --git a/arch/arm64/boot/dts/rockchip/rk3568-evb.dtsi b/arch/arm64/boot/dts/rockchip/rk3568-evb.dtsi
index a4e0d1f8dc9e..18cef0ec80bf 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-evb.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3568-evb.dtsi
@@ -45,6 +45,22 @@
 		};
 	};
 
+	audiopwmout_diff: audiopwmout-diff {
+		status = "disabled";
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "rockchip,audiopwmout-diff";
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,bitclock-master = <&master>;
+		simple-audio-card,frame-master = <&master>;
+		simple-audio-card,cpu {
+			sound-dai = <&i2s3_2ch>;
+		};
+		master: simple-audio-card,codec {
+			sound-dai = <&dig_acodec>;
+		};
+	};
+
 	backlight: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pwm4 0 25000 0>;